1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b59898f801435b36d500c0a61a922ad33bbf78edcbc54d5167a40ed715c820f. Chain 2 (Bitcoin): anchored in block 953955 (2026-06-16T14:29:53Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/26739e64-36f0-4ffc-8bff-9ec13bf36ba9.json and https://artists.proofprofile.net/proofs/artist/26739e64-36f0-4ffc-8bff-9ec13bf36ba9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x673bcca011cbe0fe2f4907e382b88aab4c618edd09ecdd1d81252c0e454b910b. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPVP01909002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ee2db4cc5aeea629c18fd44aeb30f7c94df5afbe0be7217c5db68d261cfa908. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPVP01913102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cc47d2aac4f78b8f11e21c3dd7e5a11b0c49e396e8c367c0d93973d4749c171. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPVP01913103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb200a0caa87bced8ca08a8b7fd6dc202b0e6c49140ca87699414e8a636bf3a74. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPVP01913104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf22954929f81ea439b97199cc4669d06e661294f3117bff0b4d91c687ab7e919. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPVP01913105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd1c0a31f733f39c4af048b76fea1f32bd20157d3706cd35157dab436f9ba922. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPVP01909003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0692e5310d800fb43aba3eed0b07f6728244a4341f8f63eafe47b0dd6eba9c18. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPVP01913101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14031015de57c3d8c660c73abeeeecdba1eb56f4a60d78a9d14080bcd1fb728b. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPVP01909001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44a4b0c00e8c0b4db42cabffbafe5536305d0e0260924af1f9d09ccf5b80da47. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPVP01913106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9a6b2fb2784a837dcbd454c1a1cf8a59013a8bd8a5a85d49e741660f797ca1b. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPVP01913107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8795d4fbd2c0ada63d74d1a4cfe4e6aefc1c6aa1a5d77994b7ee8f5ae986af30. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPVP01902001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56c63c86f54047838ef29e83984a69b36e4266aef3a83c9699af8ebd5e40b874. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPVP01902005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2a8edd999476b8aeb88f7b57f670e2718210ecb445e1d8328946b876d43aefb. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPVP01902006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25702eb1505d5a5ddf6f7cf80b9cb2508ec08b4b155da0994c7873831b42c755. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPVP01902007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xade5d0309987b6ca7c05beb2993a781f0233a78d6c9056013145bc6911fac2ac. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPVP01902002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c8631e71340e29b02fc7b1a1e9f1662c2f25b3ae3356226664fabb65d6fa347. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPVP01902003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x614c15214801b5e735821d226b13f134c30b6f6f95910561daea7f9f66d852a1. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPVP01902004.